42 lines
1.4 KiB
C#
42 lines
1.4 KiB
C#
namespace KLHZ.Trader.Core.Math.Common
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{
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public static class Lines
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{
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public static (decimal x, decimal y) LinesCrossing(decimal k1, decimal b1, decimal k2, decimal b2)
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{
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var x = (b2 - b1) / (k1 - k2);
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var y = k1 * x + b1;
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return (x, y);
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}
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public static (bool res, DateTime x, decimal y) IsLinesCrossing(DateTime time1, DateTime time2, decimal val1_1, decimal val1_2, decimal val2_1, decimal val2_2)
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{
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var dtime = (decimal)(time2 - time1).TotalSeconds;
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if (dtime == 0) return (false, DateTime.MinValue, 0);
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var dval1 = val1_2 - val1_1;
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var k1 = dval1 / dtime;
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var b1 = val1_1;
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var dval2 = val2_2 - val2_1;
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var k2 = dval2 / dtime;
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var b2 = val2_1;
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if (k1 != k2)
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{
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var cross = LinesCrossing(k1, b1, k2, b2);
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if (cross.x >= 0 && cross.x <= dtime)
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{
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var crossingTimestamp = time1.AddSeconds((double)cross.x);
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return (crossingTimestamp >= time1 && crossingTimestamp <= time2, crossingTimestamp, cross.y);
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}
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}
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//else if (b1 == b2)
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//{
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// return (true, time2, val2_2);
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//}
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return (false, DateTime.MinValue, 0);
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}
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}
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}
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